JPH0441816A - Plier for pile driving work at water bottom - Google Patents

Abstract

PURPOSE:To provide drivability for a pile until its top comes under the water level by furnishing a pile chucking device at one end in the longitudinal direction, using the other end as the grip part to admit grasping by the chuck of a vibratory device, and furnishing a lagging joint in the longitudinal direction alongside the side face. CONSTITUTION:A chuck 11b for a steel pipe lagging 8 is installed at the bottom of a body rod 11a. The top 11c of this body rod 11a is used as a grip part which admits grasping by a chuck device 2 mounted on a vibratory device 1. A lagging joint 11d is installed in the longitudinal direction on the side face of the body rod 11a, and thus pliers 11 are formed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a YATCO for driving piles (including sheet piles) into water bottoms such as riverbeds, seabeds, and lakebeds.

In civil engineering, a yatko is a column-shaped tool that is attached to the top of a pile when driving the pile into water or the ground surface.

Yatko is generally called ``scissors'' or ``yatoko''.
The original word 0, which is sometimes used with the character , means the gold scissors used in the large construction of Kajiya.

For example, when performing vibrating pile driving, the Yatco is interposed and fixed between the vibrating device and the pile, and transmits vibrations to the pile.

[Conventional technology]

A vibrating device used in civil engineering construction work generally has a structure in which multiple pairs of rotating shafts each having an eccentric weight attached thereto are arranged in parallel.

According to such a configuration, it is possible to add the excitation force of the eccentric weight rotating in opposite directions in a desired direction, and cancel it out in an unnecessary direction.

FIG. 3(A) is a schematic diagram showing vibrating pile driving work on land.

The vibration device 1 is suspended by a crane (not shown).

A chuck device 2 is fixed to the lower end of the vibration device 1. 3 is a flange joint that is fastened using bolts and nuts.

The chuck device 2 described above grips the top of the pile 4 and brings the lower end of the pile 3 into contact with the ground 5.

The vibration device 1 has a built-in drive machine (not shown) such as an electric motor, and rotates an eccentric weight (not shown).

Generates vertical vibration.

The above vibration is caused by the flange joint 3 and the chuck device! 2 to the pile 4, and the pile 4 sinks into the ground 5 due to its own weight and vibration. Figure 3 (B) is a schematic diagram showing the work of driving the pile 4 into the underwater ground 5'. It is.

Reference numeral 1 designates the vibrating device explained in connection with the figure (A), 2 the same chuck device, and 3' the same flange joint.

6 is the water surface.

The conventional Yatco 7 has its top fixed to the vibrating device 1 by a flange joint 3', and a chuck device provided at its lower end! 2 grips the stake 4.

Specifically, the pile 4 shown in this schematic diagram (FIG. 3(B)) may be a concrete pile, a steel pipe pile, or a steel sheet pile or a steel pipe sheet pile.

FIG. 4 is a schematic diagram showing a construction method in which a large number of steel pipe sheet piles 8 are lined up and driven into the underwater ground 5'.

9 drawn between adjacent steel pipe sheet piles 8 is a joint between the steel pipe sheet piles. An enlarged cross-section of the same is shown in FIG.

No. 51ii! I (A) is a two-port type joint, (B) is a pipe T-type joint, and (C) is a vibe type joint.

(A) In the two-port type joint shown in the figure, a joint 9a having a C-shaped cross section is welded to one steel pipe sheet pile 8, and a T-shaped joint 9b to the other steel pipe sheet pile 8'.

(B) The pipe T-type joint shown in the figure has one steel pipe sheet pile 8
has an arc-shaped joint 9c with a nearly circular cross section.

The other steel pipe sheet pile 8' has joints 9d each having a T-shaped cross section, each fixed by welding.

(C) In the vibrator type joint shown in the figure, nearly circular arc-shaped joints 9e are welded and fixed to both the steel pipe sheet pile 8 on one side and the steel pipe sheet pile 8' on the other side.

Although any type of joint can be used, pipe-type joints are becoming popular because there is no distinction between male and female joints, and because they have good water-stopping properties.

In the work shown in FIG. 4(A), when driving a large number of sheet piles 8 one after another, the joints 9 must be engaged and driven.
The top must protrude above the water surface 6 as shown in Figure (A).

This is because if the top part is submerged below the water surface, the joint 9 cannot be engaged even if the fifth order sheet pile is driven in.

[Problem to be solved by the invention]

Depending on the specifications of the underwater structure or working conditions, the top of the steel pipe sheet pile 8' may have to be lower than the water surface 6 by the amount of depth, as shown in FIG. 4(B).

In such a case, in the prior art, 1, Fig. 4 (A)
After the steel pipe sheet piles 8 were placed side by side as shown in Figure 1, they had to be cut underwater along the line a-c' shown in Figure 1. -The above-mentioned work involving underwater cutting not only wastes a great deal of time and labor, but also results in cutting off the upper part of the steel pipe pile, which is unfavorable from the standpoint of resource economy.

Therefore, it is desired to perform underwater driving of sheet piles using a Yatco, which was used for individual pile driving in the conventional technology.

FIG. 6 is an explanatory diagram showing a construction method in which steel pipe sheet piles are lined up and driven under the water using a Yatco.

This construction method is based on an unknown invention created by the present inventors.

(A) II of FIG. 6 shows a state where a large number of steel pipe sheet piles 8, 8', 8', 8a, .

Driving of steel pipe piles 8.8' and 8' has been completed.

Although the steel pipe piles 8a, 8b, and 8c have been driven, the YATCO piles 7a, 7b, and 7c are still attached to them, respectively.

The steel pipe pile 8d that is about to be driven is erected with its top suspended from the crane hook 9 via the jack 7d.

To connect the Yatco 7d and the main pile, connect the main pile to the pile keeper.
etc., to connect the joint pipes.

CB) As shown in the figure, the vibration device 1 is attached to the head of the Yatko 7d (it is gripped by the chuck device 2 explained in FIG. 3), and vibration driving is performed as shown in the figure (C).

In this case, the management (falling down) of piles (including sheet piles).

(tilt, etc.), check the fall and tilt of Yatko.

Aim for pile driving accuracy.

The figure (D) shows a state in which the steel pipe sheet pile 8d has been driven to a predetermined depth.

The steel pipe sheet pile 8d that has been driven to the specified depth is Yatco 7d.
Leave the steel pipe pile 8d attached. In this state, the steel pipe pile 8d is under the water surface and it is not easy to confirm its position, so the Yatko 7d is attached to the steel pipe pile 8d to serve as a marker. I'll keep it.

(E) As shown in the figure, the Yatco 7a is lifted up by detaching it from the steel pipe pile 8a which has been partially driven.

The next steel pipe sheet pile 8e is suspended by this Yatco 7a, as shown in FIG.

Comparing the state of this figure (F) with the above-mentioned figure (A), it is the same except that the names indicating the order of the steel pipe sheet piles and Yatco have been changed. In this way, one cycle of the process proceeds, and one steel pipe sheet pile is driven in each cycle.

However, when trying to implement the unknown invention construction method described with reference to FIGS. 6(A) to 6(F), it is difficult to perform the construction using the conventional YATCO method (FIG. 3) for the following reasons.

That is, in Figures (A), (E), and (F), the robot that is working during each step of the construction method explained in Figure 6 is directly suspended by the crane hook 9. (B
), (C), and (D), the vibration device 1 is attached.

Therefore, in the conventional YATCO 7 shown in FIG. 3(B), which has a structure in which the vibration device 1 is fastened with bolts and nuts via a flange joint 3', it is difficult to change the setup of each process. It wastes a lot of time and effort, and is uneconomical.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a tool suitable for implementing the previously unknown construction method shown in FIG.

[Means to solve the problem] In order to achieve the above object, the present invention has been made.

A chuck device for piles (including sheet piles) is provided at one end in the longitudinal direction (lower end when in use), and the other end (upper end when in use) has a structure that can be gripped by the chuck of the vibrating device, and A sheet pile joint corresponding to the sheet pile joint provided on the above-mentioned pile was provided on the side surface.

[Effect]

According to the above configuration, the vibrating device can be freely attached to and detached from the upper end of the Yatco (via the chuck).

Therefore, it is possible to remove the vibrating device from the robot and leave the device alone for a while, and at the same time, it is possible to grip another robot with the vibrating device.

Furthermore, if a vibration device is attached to the Yatco while holding the sheet pile with the Yatco, it becomes possible to lift the Yatco via the vibrating device, and also to lift the piles gripped by the Chuck of the Yatco together. .

In this way, it becomes possible to implement the unknown invention method described with reference to FIGS. 6(A) to 6(F).

〔Example〕

FIG. 1 shows an embodiment of the Yatco according to the present invention, with FIG. 1(A) being a side view and FIG. 1(B) being a front view.

The Yatco 11 of this example is provided with a chuck llb for the steel pipe sheet pile 8 at the lower end of the main body pile 11a.

And, the upper end lie of this Yatco 11 is.

It serves as a gripping portion that can be gripped by a chuck device 2 attached to the vibrating device 1.

Comparing this structure with the conventional example (Fig. 3), we find that the conventional YATCO 7 has a pile chuck device 2 at its lower end.
is attached, but its upper end is of a structure that cannot be gripped by the chuck device 2 of the vibrating device [1].

In comparison, the Yatco 11 of this example can grip and release the steel pipe sheet pile 8 with the chuck llb at its lower end, and can grip and release the steel pipe sheet pile 8 by the chuck device 2 of the vibration device 1 at the upper end. It is structured so that it can be released.

Furthermore, this Yatco 11 is provided with a sheet pile joint lid in the longitudinal direction on its side surface.

The format of the above sheet pile joint lid is, for example, from Fig. 5(A) to
Any of the various types of sheet pile joints shown in (C) may be used, but as shown in FIGS. It is of the same type as the joint 9, and is configured to be aligned on the same straight line as the steel pipe sheet pile joint 9.

In FIG. 1(A) which is a side view, the width dimension W1 of the chuck Ilb and the width dimension W2 of the chuck device 2 are larger than the rectangular dimension d1 of the steel pipe sheet pile 8 and protrude outward. In FIG. 1(B), the steel pipe sheet pile 8
Thickness dimension TI of chuck llb compared to diameter dimension dl of
And the thickness dimension T2 of the chuck device [2 is small and does not protrude laterally.

As mentioned above, in the front view (FIG. 1(B)), the steel pipe sheet pile joint 9 of the steel pipe sheet pile 8 and the sheet pile joint l of the YATCO 11 are shown.
id and are arranged in a straight line.

Therefore, the width dimension T of the chuck llb of this Yatco 11
I is smaller than the diameter d2 of the main body rod 11a of the Yatco 11, and does not protrude laterally.

As described above, the fact that the chuck llb of the YATCO 11 does not protrude laterally compared to the main body rod 11a in the front view means that each of the plurality of steel pipe sheet piles 8 can be attached to the YATCO 1.
1, the chuck llb of any one of the robots 11 does not interfere with the adjacent one.

This is designed to prevent interference with the steel pipe sheet piles held by the adjacent Yatco.

As can be easily understood by comparing and contrasting FIGS. 1(A) and (B), the chuck llb of YATCO 11 is
be held in the diametrical direction. Specifically, the steel pipe sheet pile joint 9 is clamped in a direction perpendicular to the direction in which it is arranged (the direction perpendicular to the plane of the paper in Fig. 1 (A), the left-right direction in Fig. 1 (B)), and the so-called two-point support is used. It will be held in the shape of

Next, using the Yatco 11 configured as described above,
An example of use in which steel pipe sheet piles are placed side by side on the bottom of the water will be explained.

FIG. 2 is a process explanatory diagram of this usage example, in which a large number of steel pipe sheet piles are driven into the water bottom 5' located below the water surface 6.

In Fig. 2(A), 8.8' and 8' are existing steel pipe sheet piles.

8a, 8b, and 8a are steel pipe sheet piles that have been driven in this order and have not yet been subjected to post-processing (removal of the pipes).

Reference numeral 11 indicates the Yatcos described with reference to FIG. 1, and in this usage example, there are four Yatcos 11A.

11B, IIC, and IID were used in turn.

The YATCO 11A is still holding the steel pipe sheet pile 8a and driving the steel pipe sheet pile 8a into it, and has not yet been removed.

The YATCO 11B has not yet removed the steel pipe sheet pile 8b while holding the steel pipe arrow 8b therebetween.

The YATCO 11C is still holding the steel pipe sheet pile 8c and driving the steel pipe sheet pile 8c into it, and has not yet been removed.

The steel pipe sheet piles 8d to be placed side by side on the steel pipe sheet piles 8c are clamped by the chuck llb of the YATCO 11D, and the gripping portion 11c of the YATCO 11D is gripped by the chuck device i2 of the vibration device 1.

The above-mentioned vibrating device II is suspended by a swing lane 9' (only a part of the pulley and wire lobes are shown) via a rod swinging device 1o.

The top of the Yatco 11C protruding above the water surface 6 is hoisted down, and the steel pipe sheet pile joint 9 of the steel pipe sheet pile 8d is engaged with the sheet pile joint lid of the Yatco 11C.

The steel pipe sheet pile joint 9 is suspended while sliding it along the sheet pile joint lid.

With Yatco 11C holding steel pipe sheet pile 8C,
Since the sheet pile joint lid of the Yatco 11C and the steel pipe sheet pile joint 9 of the steel pipe sheet pile 8c are aligned, the steel pipe sheet pile joint 9 of the suspended steel pipe sheet pile 8d is as shown in FIG. 2(B). It slides from the sheet pile joint lid of Yatco 11C to the steel pipe sheet pile joint 9 of the steel pipe sheet pile 8C and is engaged.

Further, the Yatko 11D and the steel pipe sheet pile 8d held by the Yatko 11D are suspended, the lower end of the steel pipe sheet pile 8d is brought into contact with the water bottom 5' (see Fig. 2 (C)), and the vibration device 11 is activated. Perform vibration casting work.

In this way, the steel pipe sheet piles 8d are accurately positioned via the steel pipe sheet pile joints 9 with respect to the steel pipe sheet piles 8C, and are driven in rows.

At this time, as explained in FIG. 1, the steel pipe sheet pile 8
The thickness dimension (the dimension in the left-right direction in FIG. 2) of the chuck llb of the YATCO 11D that grips the YATCO 11D does not protrude sideways from the main body rod 11a of the YATCO 11D, so it does not interfere with the YATCO 11C, and The work progresses smoothly without interfering with the steel pipe sheet pile 8C.

As shown in FIG. 2(D), when the steel pipe sheet pile 8d is driven into the predetermined position, the vibrating bag! The chuck device that stops the operation of 1 and grips Yatco 110! 2, and as shown in FIG. 2(E), the vibration device 1 and the chuck device attached to it are removed. 2.

The chuck device 2 grips the YATCO IIA as shown in FIG. 2(F), releases the grip on the steel pipe sheet pile 8a by the chuck llb of the YATCO 11A, and lifts the YATCO IIA with the crane 9'. .

Using the chuck llb of the Yatco IIA lifted as described above, grip and lift the new steel pipe sheet pile 8e as shown in FIG. .

The steel pipe sheet pile joint 9 of the steel pipe sheet pile 8e is engaged with the sheet pile joint lid of the YATCO 11D, slides down guided by the sheet pile joint 11d, and slides into the steel pipe sheet pile joint 9 of the steel pipe sheet pile 8d.In this way, the steel pipe sheet pile 8e is accurately guided to a position adjacent to the steel pipe sheet pile 8d.

Comparing this Fig. 2 (G) with the above-mentioned Fig. 2 (B), we find that the steel pipe sheet pile 8d that is about to be driven in Fig. 2 (B) has already been driven in Fig. 2 (G). In the figure (G), a steel pipe sheet pile 8e is about to be driven next to (along with) the steel pipe sheet pile 8d.

In Figure (B), 3 were used and unrecovered.
Of the Yatco IIA, IIB, and IIC in the book, Yatco 11A, which was used the earliest, is being used again, and (B) Yatco 11, which was in use in the figure.
In the figure (G), D indicates used and unrecovered.

That is, the state shown in FIG. 2(G) is a state in which one cycle of the process has progressed compared to the above-mentioned FIG. 2(B).

In this way, the four Yatko IIA, 11B, II
C and IID are sequentially collected and reused, and a large number of steel pipe sheet piles 88~ are placed side by side on the water bottom 5'.

In this usage example, four Yatcos were used in turn,
When using the Yatco of the present invention, at least two Yatco are used alternately one after another, and one Yatco is always attached to the already cast steel pipe sheet pile so that its top protrudes above the water surface 6. Yatco sheet pile joint lid protruding
In this way, the steel pipe sheet pile joint 9 of the steel pipe sheet pile 8 in the next step can be positioned and guided.

However, as shown in the usage examples shown in Figure 2 (A) to (G), four Yatco IIA to 11D are used to always place three or more used and unrecovered Yatco on top of the already driven sheet piles. If it is attached to and left in place, the three or more Yatcos are connected via the sheet pile joint lid and support each other, so the resistance against waves is large and stable.

When driving piles (including sheet piles) using a vibrating device,
Techniques for suspending the vibrating device via vibration isolating hangers are well known. If this known technology is applied, the lifting force can be reduced from the state in which the vibration device is suspended by a crane via the anti-vibration hoist (
(or zero) and operate the vibration device to perform vibration driving.

Therefore, in the state shown in FIG. 2(C), vibration driving can be performed while the crane 9' and the vibration device 1 are connected via the vibration isolating hanger 10, and as shown in FIG. 2(D). Release the grip of the chuck device 2 of the vibration device 1 as shown in Fig. 2 (F
), the chuck device 2 allows the user to change the grip to the Yatco 11A. The relationship between the possibility of such operations and the configuration shown in FIG. 1 will be described below with reference to FIGS. 2 and 6.

Figures 6 (A) to (F) schematically show the idea of an unknown invention method created by the present inventor.
Until now, the equipment for implementing this has not been completed.

Figures 2 (A) to (G) schematically depict the actual process at the stage when the idea of the above-mentioned inventive construction method was made practicable using the Yatco for underwater pile driving work according to the present invention. As described below, there are some differences between FIG. 2 and FIG. 6.

In FIG. 6(A) showing the idea, the Yatko 7d is directly suspended by the crane 9, and
In D), the crane 9 is separated from the Yatco 7d, and the vibration device 1 is attached to the top of the Yatco 7d. And, in Figure 6 (E), there is a vibration device! 1
The crane 9 lifts the Yatco 7a while leaving it on the top of the Yatco 7d.

In contrast, in the configuration of FIG. 1, which is an embodiment of the present invention,
The vibration-proof hanging tool 10 suspended by the crane 9' and the vibration device 1 suspended by the vibration-proof hanging tool 10 are firmly connected and cannot be easily attached or detached.

Then, a gripping portion 11c is attached to the top of the YATCO 11 so that the YATCO 11 can be adapted to the chuck device 2 which is conventionally configured to grip a steel pipe pile (including sheet piles). It is a provision.

In FIGS. 2(C) and 2(D) showing the construction method in which the Yatco 11 of this example is actually used, the vibration equipment is still connected to the crane 9' via the vibration isolating hanger 10! 1, vibration driving of the steel pipe sheet pile 8d is performed by gripping the Yatco 11D via the chuck device 2, and in FIG.
Release the grip of D, and (F) remove the chuck device 2 as shown in the figure.
Then switch to Yatko 11A and lift it up.

A new steel pipe sheet pile 8e was created by lifting Yatco IIA.
When it is grasped and lowered to a predetermined position (FIG. 2 (G)), the steel pipe sheet pile 8e can be vibrated and driven through the Yatco IIA.

In this way, in FIG. 6 (illustrating the idea), the crane 9 is used to change the grip of the lifting partner member, while in FIG. effect has been achieved.

The main reason why this kind of usage is possible and why it has such effects and effects (see Fig. 1) is that the steel pipe sheet pile 8 can be freely attached and detached by the chuck llb provided at the lower end of the YATCO 11. This is because it has a structure that can be gripped, and that the top of the Yatco 11 has a structure that can be detachably gripped by the chuck device 2 of the vibrating device.

The reason why a large number of steel pipe sheet piles can be lined up and easily driven in the correct position is that a sheet pile joint lid corresponding to the steel pipe sheet pile joint 9 of the steel pipe sheet pile 8 is provided on the side of the YATCO 11.

〔Effect of the invention〕

As explained above, according to YATCO for underwater pile driving work according to the present invention, a large number of steel pipe sheet piles are lined up and driven on the underwater bottom,
It is possible to drive the tops of a large number of steel pipe sheet piles to below the water surface, and to quickly position the steel pipe sheet piles to be driven.
It can be done easily and with high precision.

[Brief explanation of drawings]

FIG. 1 shows an embodiment of the underwater pile driving machine according to the present invention, in which (A) is a side view and (B) is a front view. FIG. 2 shows an example of the pile driving method using the Yatco of the above embodiment, and (A) to (G) are schematic diagrams for explaining each process. FIG. 3 is an explanatory diagram of the conventional pile driving method, where (A) shows pile driving on land and (B) shows pile driving under water. FIGS. 4(A) and 4(B) are explanatory diagrams of problems in the conventional underwater pile driving method. FIG. 5 is an explanatory diagram of a steel pipe sheet pile joint, in which (A) shows a two-port type joint, (B) a T-type joint, and (C) a vibe-type joint. FIGS. 6(A) to 6(F) are explanatory diagrams of an unknown underwater pile driving method. 1... Vibration device, 2... Chuck device, 3, 3'.
...Flange joint, 4...Steel pipe pile, 5...Ground, 5
′... Water bottom ground, 6... Water surface, 7... Conventional Yatco, 8... Steel pipe sheet pile, 9... Steel pipe sheet pile joint, 1
0... Anti-vibration hanging tool, 11... Yatco of the example, lla
...Body rod, 11b...Chuck, lie...Gripping portion, 11d...Sheet pile joint.

Claims (1)

[Claims] 1. A pile chuck device is provided at one end in the longitudinal direction, and the other end can be gripped by the chuck of the vibrating device, and a joint for sheet piles is provided in the longitudinal direction along the side. Yatco for underwater pile driving work, which is characterized by the following: